I’ve now implemented Gravatars for the comments on this site.

It was a bit tricky as this is coded using ASP (VBScript) - but I’ve managed to get it working using the code from http://www.frez.co.uk/freecode.htm#md5 - although interestingly the VBScript version wouldn’t work, so I have used the javascript version - a bit of a strange way to do it, but it seems to work. I didn’t realise before that you could mix languages in ASP, but it turns out you can by including one in the page using the <script runat=“server”… tag, and then it can be called from within the other code on the page even if it’s in a different programming language!